2013523144 has 8 divisors (see below), whose sum is σ = 3775355910. Its totient is φ = 1006761568.

The previous prime is 2013523139. The next prime is 2013523147. The reversal of 2013523144 is 4413253102.

It can be written as a sum of positive squares in only one way, i.e., 1884428100 + 129095044 = 43410^2 + 11362^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2013523147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125845189 + ... + 125845204.

Almost surely, 2^2013523144 is an apocalyptic number.

It is an amenable number.

2013523144 is a deficient number, since it is larger than the sum of its proper divisors (1761832766).

2013523144 is a wasteful number, since it uses less digits than its factorization.

2013523144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251690399 (or 251690395 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2013523144 is about 44872.2981805033. The cubic root of 2013523144 is about 1262.7543558880.

Adding to 2013523144 its reverse (4413253102), we get a palindrome (6426776246).

The spelling of 2013523144 in words is "two billion, thirteen million, five hundred twenty-three thousand, one hundred forty-four".